This is also called disputed thoracic outlet syndrome or common thoracic outlet syndrome.

CNN: Thoracic outlet syndrome

Thoracic outlet syndrome symptoms can vary, depending on which structures are compressed.

CNN: Thoracic outlet syndrome

People with nonspecific-type thoracic outlet syndrome have chronic pain in the area of the thoracic outlet that worsens with activity, but the specific cause of the pain can't be determined.

CNN: Thoracic outlet syndrome